Spraying device



Nov. 22, 1960 w. M. VOGEL, JR 2,96 70 SPRAYING DEVICE Filed April 30,1959 2 Sheets-Sheet 1 INVEN TOR.

I ATTORNEY Nov. 22, 1960 w. M. VOGEL, JR

. SPRAYING DEVICE Filed April 30, 1959 2 Sheets-Sheet 2 IN V EZV TOR.WZF/z'am Mal-29a [@vfli,

A TTORNEY SPRAYING DEVICE William Martin Vogel, J12, Meudham, N..l.,assignor to Standard Container, Inc., Montclair, N.J., a corporation ofNew Jersey Filed Apr. 30, 1959, Ser. No. 810,038

Qlairns. (Cl. 239361) This invention relates to a device for atomizingand spraying a liquid insecticide of the general type disclosed inUnited States Patents Nos. 2,194,339, 2,233,161, and 2,178,088, whereinthe movement of a piston in a cylinder draws liquid into a spray headhaving one or more apertures or orifices through which the liquid isatomized and sprayed upon the forward movement of the piston in thecylinder.

One object of the invention is to provide in a sprayer of this type, aspray head embodying novel and improved features of construction wherebythe liquid shall be thoroughly atomized and projected in a plurality ofjets so spaced apart that the jets intersect each other and produce, ineifect, a cloud of extremely finely divided liquid particles.

Another object is to provide in such a spray head, a novel and improvedconstruction and combination of a main plate member which shall alsoconstitute an end closure for the cylinder of the device and shall havean outwardly extending polygonal projection provided with two or moreatomizing orifices in its front wall, an auxiliary cap-like polygonalspray head member snugly telescopically fitted on said projection andhaving an orifice in a front portion thereof in axially spaced andaligned relation to each orifice in the main plate member, and means forsupplying liquid from a container to the spray head at a point betweensaid main plate and auxiliary plate and at one side of the axis of saidorifices, whereby the auxiliary member shall always be applied to theprojection with the orifices properly aligned, and air forced from thecylinder by the piston shall be projected through said orifices, and theliquid shall be mixed with the air in the mixing chamber between saidmain plate and auxiliary plate and atomized and projected in the form ofa cloud or finely diffused spray comprising an infinite number anduniformly distributed liquid particles.

A further object is to provide such a spray head wherein the edges ofthe side walls of the cap-like auxiliary member shall abut the mainplate at the base of said projection to automatically space apart thefront walls of the projection and of the auxiliary member the desireddistances, and a siphon tube shall be connected to the auxiliary memberand extend into the space or chamber between said front walls with itsend at one side of the axis of said orifices for conducting liquid froma source of supply, so that the spray head shall comprise a minimumnumber of simple parts that can be easily and quickly assembled togetherand shall produce a highly effective spray.

It is another object of the invention to provide a spray head of thegeneral nature described, wherein each orifice States Patent 0 fPatented Nov. 22, 1960 shall be disposed in a forwardly extendingprotuberance on the corresponding main member and auxiliary member,thereby providing for a greater output or volume of liquid projectedthrough the orifices and for the projection of the spray greaterdistances.

Other objects, advantages and results of the invention will be broughtout by the following description in conjunction with the accompanyingdrawings in which Figure l is a side elevation of the spraying deviceembodying the invention, in combination with a container for the liquidto be sprayed;

Figure 2 is an enlarged end elevation of the spraying device, showingthe spray head and with portions of the container omitted;

Figure 3 is a further enlarged longitudinal sectional view approximatelyon the plane of the line 33 of Figure 2;

Figure 3a is a fragmentary sectional view on the plane of the line 3a3aof Figure 2;

Figure 4 is a fragmentary front elevation of the main member or plate ofthe spray head;

Figure 5 is a top plan view of the parts shown in Figure 4;

Figure 6 is a horizontal sectional view approximately on the plane ofthe line 6--6 of Figure 2;

Figure 7 is a view similar to Figure 2, showing a modification of theinvention;

Figure 8 is an enlarged central longitudinal sectional view on the planeof the line 83 of Figure 7;

Figure 9 is a fragmentary front elevation of the main plate member;

Figure 10 is a top plan view of the parts shown in Figure 9; and

Figure 11 is an enlarged horizontal sectional view on the plane of theline 1111 of Figure 7.

Specifically describing the embodiment of the invention shown in Figures1 to 6 inclusive, the reference character A designates the cylinder ofthe spraying device that is usually formed of sheet metal or the likeand is closed at one end by a cap B through which extends and projectsthe piston rod C of a piston D for forcing air through the outlet ordischarge orifices of a spray head generally designated E. The pistonrod C has the usual handle F and the piston has a flexible packing cup Gof leather or other suitable material.

At the end of the cylinder opposite the cap B and adjacent the sprayhead is a baffle member H that closes the end of the cylinder except foran opening I in the upper portion of the baffle through which the airpasses from the cylinder to the spray head.

The spray head E includes a main or rear plate member 1 whose marginaledge has an interlocking seam 2 with a returned flange 3 on the end ofthe cylinder A. The peripheral edge 4 of the baffle member H is clampedbetween the flange 3 of the main plate 1 and the end of the cylinder asbest shown in Figure 3.

The main plate member 1 is preferably formed of stiff sheet materialsuch as metal and has an integral forwardly extending projection 5 thatis cup-shaped in cross section and preferably polygonal. As shown, theprojection has side walls 511 projecting angularly from the centralportion of the main plate and disposed in angular relation to eachother, and a front wall 512 integrally connected to said side walls. Thefront wall has an 3. lon ated p q uber nsze, c. th s pproxi atel n a.diametral plane of the cylinder and in which are spraying orifices 6that are disposed and spaced apart in said diametral plane of thecylinder; and the upper and lower portions 5d of said front wall divergerearwardly from said protuberance. A cap-like front auxiliary member 7of the spray head is telescopically fitted over the project-ion 5 of themain member as best shown in Figures 3 and 6. The member 7 includes sidewalls 7a that snugly engage the corresponding side walls 5a of theprojection 5, and a front wall 7b that has a forwardly extending potuberan e 7 in spa d; i x ar s d and. P ra el r lic on to he p ub nc56ml. in hich re p ay n: fice ac axial. l n e t. h; e fe or fi es-. npre cr b y ome at larger in ame e han: h orifices 6. Extendingdownwardly from the protubere ance 7c is another protuberance 7dthatprovides a seat and clearance for the siphon tube 9-that is, shownas sealed in the cap 10 of the liquid container I asindicated at 11. Theend of the tube extends into the space between the main member andauxiliary member at one side of the common plane of the axeso-f'theorifices, as best shown in Figure 3 It will be understood thatthe cap. 10; will be firmly attached to the cylinder so that uponforward m'ovement of the piston D air will be forced from the cylinderthrough the opening I and the orifices 6 and 8 so as to draw liquidthrough the siphon tube 9 into the mixing chamber between the main'andauxiliary members of the spray'head and cause a -th-orough mixing of theair and liquid and atomization of the liquid as the jet passes throughthe orifices. As shown, there will be a jet projected from each of theorifices 8 and the two jets will intersect each other. The spray headthus insures a thorough or high degree of atomization, a cloud-likespray of finely divided and uniformly difiiused particles of liquid thatare projected considerable distances from the spray head, thereby toinsure a large output of liquid spray over a large area of space,rapidly and efiiciently. The space between themain and auxiliary membersprovides for accumulation of a substantial quantity of finely dividedliquid, thereby to insure continuity of; the spray. The protuberances 5cand 7c direct the air and theliquid particles to the respective orifices6 and 8 and increase the velocity of the flow of the air and theatomized liquid through the orifices, It will also be observed that nodripping of the liquid from the orifices can. occur after the sprayingoperation has stopped.

'Figures .7 to 9 inclusive illustratea modified form of the spray head,the other parts of the device being the same as those shown in Figures 1to 6 inclusive.

This modified spray head K includes a main plate member 12 that has aforwardly projecting polygonal central portion 13 from which projectprotuberances 14 that are disposed in a common diametral. plane of thepump cylinder and in which are orifices 15 corresponding to the orifices6. A cap-like auxiliary spray head memher-16 is telescopicallyfittedover the projection 13 in the same manner inv which the auxiliary member7 is fitted on the projection 5 hereinbefore described, The front wallof the auxiliary member has forwardly. ex-. tending protuberances 17that are in axially spaced and aligned relation to the protuberances 14,respectively, and have discharge orifices 18. The front wall of the auxiliary member also has a protuberance 19 thatformsa seat and clearancefor the siphon tube.20. which extends into the space between. the mainand auxiliary members as best shown in Figures 8 and 11 and is sealed inthe cap 21 of the liquid container.

Theprotuberances 14 and 17 are shown as approxirnately cylindrical intransverse section and slightly larger than the respective orifices 15and 18, and preferably, the projection 13 of the main member 12 hasupper and lower wall portions 13a that diverge rearwardly from theprotuberances 14, whilethe front. wall of, hsawiiliar mem r as t east. hppe p r. tions 16a of its front wall extending rearwardly in spacedconverging relation to the upper wall portion 13a of the projection 13.

With this construction, when the pump cylinder is forced forwardly, theair passes from the cylinder through the opening 1 in the baffie andthence through the apertures 15 and 18 so as to draw liquid from thecontainer through the siphon tube 2!) into the space between the mainand auxiliary members. The spaced apart inclined portions of the frontwalls of the projection 13 and auxiliary member 16 provide a mixing andaccumulating chamber for the liquid and air and direct the mixture tothe protuberancesli, which, in turn, concentrate and more accuratelydirect the mixture of air liquid particles to the orifices 13; and theportions 13a of the projectionlS tend to direct the air to theprotuberances 14, as. best shown in Figures 8 and 11. Thus a greatoutput of liquid and a projection of the atomized spray great distancesare insured; and at the same time, amore thoroughmixture and atomizationof the liquid and air thancan be obtained with most of the knownSprayers, is possible with the sprayer of the invention.

The invention also provides a spraying device, the parts of which aresimple, minimum in numben'and can be easily and quickly assembled. Themain and auxiliary spray head members can be readily die-pressed fromsheet material and the cap-like auxiliary members can be easily andquickly fitted over and secured upon the projectionsv on the respectivemain members; Usually, solder will be employed to permanently seal theauxiliary members on the main members. The corresponding polygonalshapesof auxiliary members and-the projections on the main members, with thesnug fit of the auxiliary members on the main members, make it possibleto obtain easily accurate alignment of the orifices of the mainandauxiliary members. Also, the edges of the side walls of the auxiliarymembers engage the portions of the main members at the bases of theprojections on the. main members so as to automatically space the frontWalls of the main member projections and the auxiliary members thedesired distance. 7 a

It will be understood by those skilled in the art that modifications andchanges in the structural details of the sprayer and spray head can bemade within the spirit and scope of the invention. I

I claim:

1 A liquid sprayer comprising a cylinder for supplying air underpressure, and a spray head including a main platesecured on and closingone end of the cylinder and having a polygonal cup-shaped integralforwardly extending projectionincluding side walls and a front wall,said. front wall being provided with a plurality of orifices for passageof air from said cylinder, and a cap-like auxiliary. member of polygonalshape corresponding to said projection and snugly fitted over theexterior of said projection and secured thereto, said auxiliary memberhaving side Walls in frictional telescopic contact with the side wallsof saidprojection, and a front wall,'portions of which are in spacedrelation to the front wall of said projection, forming a chambertherebetween, the front wall of said auxiliary member being providedwith orifices in axial alignment with the orifices in said projection,and means for supplying liquid to said chamber. i

2. A liquid sprayer as defined in claim 1 wherein said auxiliarymemberhas an opening in its side wall and a protuberance in its front wallproviding a groove on the inner side of the wall facing inwardly fromsaid opening, and with the addition of a siphon tube extending throughsaid opening and disposed in said groove with one end insaid chamber forconducting liquid from a source of supply to said chamber.

3. A liquidsprayer as defined in claim 1 wherein said frontwall' of. theauxiliary member. has a secbnd protuberance disposed perpendicularly tothe first mentioned protuberance providing a groove on the inner side ofsaid wall and having said orifices therein, and the front wall of theprojection has a protuberance corresponding in shape with and juxtaposedto and spaced from said groove of the first mentioned protuberance andhaving the first mentioned orifices therein.

4. A liquid sprayer as defined in claim 1 wherein said projectionextends from the central portion of said main plate member, and theedges of the side walls of said cap-like auxiliary member abut the mainmember at the base of said projection to automatically space the frontwalls of said projection and of said auxiliary member.

5. A liquid sprayer as defined in claim 1 wherein the front wall of eachof said projection and said auxiliary member has a forwardly extendingprotuberance through which extend the corresponding orifices, theprotuberances of the projection being in axially spaced and alignedrelation to the protuberances of the auxiliary member.

References Cited in the file of this patent UNITED STATES PATENTS

